Product comparison · 2 pcs/workstations

Lenovo ThinkCentre A51p P4 3400 512MB 160GB XPH vs Lenovo ThinkCentre M51 P4 3000HT 512MB 80GB XPP

66specifications compared
12differ
54identical
29known for one product only

Key differences

Processor model
- ThinkCentre A51p P4 3400 512MB 160GB XPH:550
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:630
Processor frequency
- ThinkCentre A51p P4 3400 512MB 160GB XPH:3.4 GHz
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:3 GHz
Processor cache
- ThinkCentre A51p P4 3400 512MB 160GB XPH:1 MB
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:2 MB
Tcase
- ThinkCentre A51p P4 3400 512MB 160GB XPH:72.8 °C
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:66.6 °C
Internal memory type
- ThinkCentre A51p P4 3400 512MB 160GB XPH:DDR2-SDRAM
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:DDR-SDRAM
Total storage capacity
- ThinkCentre A51p P4 3400 512MB 160GB XPH:160 GB
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:80 GB
Discrete graphics card model
- ThinkCentre A51p P4 3400 512MB 160GB XPH:AMD Radeon X600 Pro
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:Intel® GMA 900
Chassis type
- ThinkCentre A51p P4 3400 512MB 160GB XPH:Tower
- ThinkCentre M51 P4 3000HT 512MB 80GB XPP:Desktop

Side by side

Differences highlightedShow differences only

Comparison of ThinkCentre A51p P4 3400 512MB 160GB XPH, ThinkCentre M51 P4 3000HT 512MB 80GB XPP
95 specifications	A Lenovo ThinkCentre A51p P4 3400 512MB 160GB XPH View product	B Lenovo ThinkCentre M51 P4 3000HT 512MB 80GB XPP View product
Processor4 differ
Processor manufacturer	Intel	Intel
Processor family	Intel® Pentium® 4	Intel® Pentium® 4
Processor modelDiffers	550	630
Processor cores	1	1
Processor threadsKnown for one	Unknown — not stated by the source	2
Processor frequencyDiffers	3.4 GHz	3 GHz
Processor cacheDiffers	1 MB	2 MB
Processor cache type	L2	L2
Processor front side bus	800 MHz	800 MHz
Bus type	FSB	FSB
FSB Parity	No	No
Processor lithographyKnown for one	Unknown — not stated by the source	90 nm
Processor operating modesKnown for one	Unknown — not stated by the source	64-bit
Processor seriesKnown for one	Unknown — not stated by the source	Intel Pentium 4 600 Series supporting Hyper-Threading Technology
Processor codenameKnown for one	Unknown — not stated by the source	Prescott
Thermal Design Power (TDP)Known for one	Unknown — not stated by the source	84 W
TcaseDiffers	72.8 °C	66.6 °C
Processor socketKnown for one	Unknown — not stated by the source	LGA 775 (Socket T)
Number of Processing Die TransistorsKnown for one	Unknown — not stated by the source	169 M
Processing Die sizeKnown for one	Unknown — not stated by the source	135 mm²
CPU multiplier (bus/core ratio)Known for one	Unknown — not stated by the source	15
ECC supported by processor	No	No
TjunctionKnown for one	100 °C	Unknown — not stated by the source
Memory1 differ
Internal memory	0.5 GB	0.5 GB
Maximum internal memory	4 GB	4 GB
Internal memory typeDiffers	DDR2-SDRAM	DDR-SDRAM
Storage1 differ
Total storage capacityDiffers	160 GB	80 GB
Optical drive typeKnown for one	Unknown — not stated by the source	DVD-ROM
Storage drive type	SATA	SATA
Diskette drive memory	1.44 MB	1.44 MB
Graphics1 differ
Discrete graphics card modelDiffers	AMD Radeon X600 Pro	Intel® GMA 900
Video adapter, bus	PCI Express	PCI Express
Video adapter resolutionKnown for one	2048x1536 16777216 colors	Unknown — not stated by the source
Performanceidentical
Product type	PC	PC
Optical driveidentical
DVD read speedKnown for one	Unknown — not stated by the source	16x
Networkidentical
Networking features	Ethernet/Fast Ethernet/Gigabit Ethernet	Ethernet/Fast Ethernet/Gigabit Ethernet
Ports & interfacesidentical
USB 2.0 ports quantity	8	8
Ethernet LAN (RJ-45) ports	1	1
Headphone outputs	1	1
Microphone in	Yes	Yes
VGA (D-Sub) ports quantity	1	1
PS/2 ports quantity	2	2
Parallel ports quantity	1	1
DVI portKnown for one	No	Unknown — not stated by the source
Firewire (IEEE 1394) portsKnown for one	2	Unknown — not stated by the source
S/PDIF out portKnown for one	No	Unknown — not stated by the source
SmartCard slotKnown for one	No	Unknown — not stated by the source
TV-outKnown for one	No	Unknown — not stated by the source
Serial ports quantityKnown for one	0	Unknown — not stated by the source
Modem (RJ-11) portsKnown for one	1	Unknown — not stated by the source
USB 1.1 ports quantityKnown for one	0	Unknown — not stated by the source
Poweridentical
Power supply	310 W	310 W
Design1 differ
Chassis typeDiffers	Tower	Desktop
Software2 differ
Operating system installedDiffers	Windows XP Home Edition	Windows XP Professional
Bundled softwareDiffers	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium, Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics, ThinkVantage Rescue and Recovery with Rapid Restore	Lotus Notes Stand-alone Client (license), Lotus SmartSuite Millennium (license), Lotus SmartSuite Millennium, Access program, IBM Director Agent (web deliverable), ThinkVantage Client Security Software (web-downloadable), Norton AntiVirus 2004 OEM Version, PC Doctor diagnostics, ThinkVantage Rescue
Displayidentical
Display included	No	No
Processor special features1 differ
Embedded options availableKnown for one	Unknown — not stated by the source	No
Enhanced Intel SpeedStep TechnologyDiffers	No	Yes
Execute Disable BitKnown for one	Unknown — not stated by the source	Yes
Idle States	No	No
Intel 64Known for one	Unknown — not stated by the source	Yes
Intel Clear Video Technology	No	No
Intel Demand Based Switching	No	No
Intel Dual Display Capable Technology	No	No
Intel Enhanced Halt State	No	No
Intel FDI Technology	No	No
Intel Fast Memory Access	No	No
Intel Flex Memory Access	No	No
Intel Rapid Storage Technology	No	No
Intel Trusted Execution Technology	No	No
Intel VT-x with Extended Page Tables (EPT)	No	No
Intel Virtualization Technology (VT-x)	No	No
Intel Virtualization Technology for Directed I/O (VT-d)	No	No
Intel® AES New Instructions (Intel® AES-NI)	No	No
Intel® Clear Video HD Technology (Intel® CVT HD)	No	No
Intel® Clear Video Technology for Mobile Internet Devices (Intel CVT for MID)	No	No
Intel® InTru™ 3D Technology	No	No
Intel® Insider™	No	No
Intel® Wireless Display (Intel® WiDi)	No	No
Processor ARK IDKnown for one	Unknown — not stated by the source	27478
Processor package sizeKnown for one	Unknown — not stated by the source	37.5 x 37.5 mm
Thermal Monitoring Technologies	No	No
Intel® Turbo Boost Technology	No	No
Intel® Hyper Threading Technology (Intel® HT Technology)Known for one	Unknown — not stated by the source	Yes
Intel® Quick Sync Video Technology	No	No
Intel® My WiFi Technology (Intel® MWT)	No	No
Intel® Anti-Theft Technology (Intel® AT)	No	No
Conflict-Free processor	No	No
Audioidentical
Audio system	SoundMAX Cadenza	SoundMAX Cadenza
Weight & dimensionsidentical
Width	175 mm	175 mm
Depth	450 mm	450 mm
Height	492 mm	492 mm
Weight	13.5 kg	13.5 kg
Other features1 differ
Security featuresDiffers	-Configuration password -Boot sequence control -Boot without keyboard or mouse -Secure Data Disposal -Parallel port I/O control -Power on password -Embedded Security Subsystem standard -Hard disk drive password -Hardfile I/O control -Kensington Lock Standard Enabled -Diskette boot inhibit -Diskette	-Boot without keyboard or mouse -Configuration password -Diskette Boot inhibit -Diskette I/O control -Hard disk drive password -Hard drive I/O control -Padlock loop -Parallel port I/O control -Power on password -Security slot (for attachment of optional cable lock) -Serial port I/O control
Intel segment taggingKnown for one	Unknown — not stated by the source	Enterprise, Professional

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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